A microscope using Zernike’s phase contrast method and a hard x-ray Gabor hologramKiyofumi Matsuda, Juan C. Aguilar, Masaki Misawa, Masato Yasumoto, Shakil Rehman, Yoshio Suzuki, Akihisa Takeuchi and Ilpo NiskanenJ. Eur. Opt. Soc.-Rapid Publ., 12 1 (2016) 25DOI: https://doi.org/10.1186/s41476-016-0027-3